Feed-water heater and condenser.



Patented luly 8, |902.

H. A. FERGUSSON. FEED WATER HEATER AND CUNDENSER.

(Application led June 18, 1900.)

(No Model.)

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uUivrinn STATES PATENT OFFICE.

HENRY A. FERGSSON, OF VILLIAMSPORT, PENNSYLVANIA.

FEED-WATER HEATERAND CONDENSER.

SPECIFICATION forming part of Letters Patent No. 704,454, dated July 8,1902. Application led June 18, 190C. Serial No. 20,697.A (No model.)

To @ZZ wiz/0m, t may concern.-

Be it known that I, HENRY A. FERGUssoN, a citizen of the United States,and a resident of Williamsport,Pennsylvania,haveinvented certainImprovements in Feed-Water Heaters and Condensers, of which thefollowing is a specification.

The object of my invention is to construct a cheap and simple form ofcombined Water heater and condenser presenting a maximum of heating orcondensing surface with which the steam is brought intimately intocontact in order to eect the rapid heating of the Water and the equallyrapid condensation of the steam.

My invention is also applicable to cooling or condensing apparatus.

In the accompanying drawings, Figure 1 is a longitudinal sectional Viewof a combined water heater and condenser constructed in accordance withmy invention, and Fig. 2 is a transverse sectional View of the same onthe line ct a, Fig. 1.

rlhe casing of the device consists of a tube l, seated at each end uponthe anged inner portions of opposite headers 2 and 3, each of theseheaders containing a steam-chamber 4 and each being provided in itsinner Web or wall with a series of openings 5, countersunk for thereception of the ends of a series of tubes 6, which are firmly seatedtherein.

In the back wall or web of each header 2, in line with the openings 4,are other openings for the reception of tubes '7, which are externallyof somewhat less diameter than the internal diameter of the tubes 6,said tubes 7 passing through the tubes 6 and through the outer walls ofthe headers 2 and 3 and having these projecting portions threaded forthe reception of nuts 8, which bear upon said outer walls of the headersand when tightened serve to force the headers tightly against the endsof the tubes 1 and 6, so as to form tight joints therewith, suitablepacking-rings or gaskets being interposed between the ends of the tubesand their seats on the headers, if desired.

Each of the headers 2 has an outwardlyprojecting liange 9, and uponthese flanges are screwed caps 10 and 11, the cap l() having aprojecting tubular branch 12. The headers 2 and 3 also have projectingtubular branches 13, communicating with their chambers 4,

and the header 3 also has a central opening 14 extending through it, buthaving no communication with the chamber Il of said header.

At one end of the tubular casing lis a tubular branch 15. The tubularbranch 13 of the header 3 is connected to the pipe for supplying steam,and the tubular branch 13 of the header 2 is connected to the pipe forcarrying Voif the Water of condensation, the water to be heated enteringthrough the tubular branch 12 of the end cap 10 and the heated waterescaping through the tubular branch 15 of the casing 1. The waterfollows the course indicated by the solid-line arrows, Fig. l-that is tosay, it passesV from the chamber 16 Within the cap 10 through the innertubes 7, thence backwardly through the opening 14 in the opposite header3, and through the chamber 17 Within the casing l to the outlet 15.steam follows the course indicated by the broken-line arrows in Fig.l-that is to say, it enters the tubular branch of the header 3, passesfrom the chamber lof the same through the contracted annular spacesbetween the tubes 6 and 7, and is condensed by contact with the outersurfaces of the tubes 7 and inner surfaces of the tubes 6, the Water ofcondensation entering the chamber 4 of the header 2 and escaping throughthe tubular branch 13 of the same. By thus circulating the steam throughthe contracted annular passages presenting both inner and outercondensingsurfaces intimate contact of the steam with saidcondensing-surfaces is insured, and there is a resultant rapidcondensation of the steam,as well as an equally rapid heating of theWater,which circ ulatesthrough the tubes 7 and around the tubes 6.

It will be noted that the tubes 7 constitute stay-bolts for securingtogether the opposite end portions of the structure and confining themto the central portion of the same, the aim of my invention having beento produce a water heater and condenser which while simple inconstruction would be compact in size and light in weight in proportionto its heating and condensing capacity, being therefore especiallyadapted for use in connection with motor-vehicles.

Although I have described my invention as a feed-water heater andcondenser, it will be evident that it may be used, if desired, for

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cooling or condensing purposes only. For instance, water or othercooling agent may follow the course indicated for the steam, and air,gas, or other fluid to be treated may follow the course indicated forthe water, or vice versa. Hence in the claims I have adopted the termfluid instead of the terms steam or waten Having thus described myinvention, I claim and desire to secure by Letters Patent- 1.' A heateror condenser comprising opposite hollow headers, one having an inlet forfluid and the other an outlet for the same, a tubular casing seated uponand confined between said headers, a series of tubes contained withinsaid casing and likewise seated upon and confined between the headers,said tubes communicating with the chambers within the headers, an inletfor another volume of fluid, an outlet for the same, and a second set oftubes passing through the headers and through the tubes whichcommunicate 'with the chambers in said headers, said internal tubeshaving end fastening devices bearing upon the outer faces of the headersand serving as tubular stay-bolts to confine the headers to the saidcasing, substantially as specified.

2. A heater or condenser consisting of opposite hollow headers onehaving a fluid-inlet and the other an outlet for the said fluid, atubular casing seated upon and confined between said headers and havingan outlet for another'volume of fluid, a series of tubescontained'within said casing and likewise seated upon and confinedbetween the headers and communicating with fthe chambers within Asaidheaders, other tubes passing through the headers and through the Itubeswhich connect the chambers of said headers, fastening devices secured tothe ends of said inner tubes, and bearing upon the outer faces of theheaders, and caps secured to the headers and inclosing chambers withwhich said internal tubes communicate, one of said caps having an inletbranch for the second volume of fluid and the opposite header having apassage leading from the chamber'of its cap to the chamber within thecentral tubular casing, substantially as specified.

3. A heater or condenser consisting of opposite hollow headers, onehaving an inlet for fluid and the other having an outlet for the same, atubular casing seated upon and confined between said headers and havingan outlet for another volume of fluid, a'series of tubes containedwithin said casing and likewise seated upon and confined between theopposite headers', said tubes communicating with the chambers within theheaders, other tubes passing through the headers and.

through said connecting-tubes and having fastening devices bearing uponthe outer faces of the headers and serving to secure the latter to thecentral structure, threaded flanges projecting outwardly from eachheader, and caps screwed upon said flanges, one of said caps having aninlet for the second volume of fluid, and the opposite header having apassage providing a communication between the chamber within its cap andthe chamber within the central tubular casing, substantially asspecified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY A. FERGUSSON.

Witnesses:

GEO. W. WHELEN, C. C. MITCHELL.

